ABAP Select data from SAP table DB4_SQ1000 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DB4_SQ1000 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to DB4_SQ1000. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the DB4_SQ1000 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_DB4_SQ1000 TYPE STANDARD TABLE OF DB4_SQ1000,
      WA_DB4_SQ1000 TYPE DB4_SQ1000,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <DB4_SQ1000> TYPE DB4_SQ1000.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_DB4_SQ1000.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM DB4_SQ1000
  INTO TABLE IT_DB4_SQ1000.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DB4_SQ1000
*  INTO TABLE @DATA(IT_DB4_SQ10002).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_DB4_SQ1000 INDEX 1 INTO DATA(WA_DB4_SQ10002).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_DB4_SQ1000 ASSIGNING <DB4_SQ1000>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DB4_SQ1000>-QQKEY = 1.
<DB4_SQ1000>-QQTIME = 1.
<DB4_SQ1000>-QQJOB = 1.
<DB4_SQ1000>-QQUSER = 1.
<DB4_SQ1000>-QQJNUM = 1.

ENDLOOP.

LOOP AT IT_DB4_SQ1000 INTO WA_DB4_SQ1000.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DB4_SQ1000-QQUDEF, sy-vline,
  WA_DB4_SQ1000-QQPLIB, sy-vline,
  WA_DB4_SQ1000-QQPNAM, sy-vline,
  WA_DB4_SQ1000-QQCNAM, sy-vline,
  WA_DB4_SQ1000-QQSNAM, sy-vline,
  WA_DB4_SQ1000-QQCNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DB4_SQ1000 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_DB4_SQ1000 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_DB4_SQ1000 INTO WA_DB4_SQ1000.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_DB4_SQ1000_STR, 
QQKEY TYPE STRING,
QQTIME TYPE STRING,
QQJOB TYPE STRING,
QQUSER TYPE STRING,
QQJNUM TYPE STRING,
QQUDEF TYPE STRING,
QQPLIB TYPE STRING,
QQPNAM TYPE STRING,
QQCNAM TYPE STRING,
QQSNAM TYPE STRING,
QQCNT TYPE STRING,
QQAVGT TYPE STRING,
QQMINT TYPE STRING,
QQMAXT TYPE STRING,
QQOPNT TYPE STRING,
QQFETT TYPE STRING,
QQCLST TYPE STRING,
QQOTHT TYPE STRING,
QQLTU TYPE STRING,
QQMETU TYPE STRING,
QQAPRT TYPE STRING,
QQFULO TYPE STRING,
QQPSUO TYPE STRING,
QQTOTR TYPE STRING,
QQRROW TYPE STRING,
QQSTF TYPE STRING,
QQSTOP TYPE STRING,
QQODPI TYPE STRING,
QQHVI TYPE STRING,
QQAPR TYPE STRING,
QQDACV TYPE STRING,
QQCTS TYPE STRING,
QQCIU TYPE STRING,
QQCIC TYPE STRING,
QQCSO TYPE STRING,
QQCTF TYPE STRING,
QQCIA TYPE STRING,
QQCAPR TYPE STRING,
QQARSS TYPE STRING,
QQC11 TYPE STRING,
QQC12 TYPE STRING,
QQC21 TYPE STRING,
QQC22 TYPE STRING,
QQI1 TYPE STRING,
QQI2 TYPE STRING,
QQC301 TYPE STRING,
QQC302 TYPE STRING,
QQ1000 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DB4_SQ1000_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_DB4_SQ1000_STR-QQKEY sy-vline 
WA_DB4_SQ1000_STR-QQTIME sy-vline 
WA_DB4_SQ1000_STR-QQJOB sy-vline 
WA_DB4_SQ1000_STR-QQUSER sy-vline 
WA_DB4_SQ1000_STR-QQJNUM sy-vline 
WA_DB4_SQ1000_STR-QQUDEF sy-vline 
WA_DB4_SQ1000_STR-QQPLIB sy-vline 
WA_DB4_SQ1000_STR-QQPNAM sy-vline 
WA_DB4_SQ1000_STR-QQCNAM sy-vline 
WA_DB4_SQ1000_STR-QQSNAM sy-vline 
WA_DB4_SQ1000_STR-QQCNT sy-vline 
WA_DB4_SQ1000_STR-QQAVGT sy-vline 
WA_DB4_SQ1000_STR-QQMINT sy-vline 
WA_DB4_SQ1000_STR-QQMAXT sy-vline 
WA_DB4_SQ1000_STR-QQOPNT sy-vline 
WA_DB4_SQ1000_STR-QQFETT sy-vline 
WA_DB4_SQ1000_STR-QQCLST sy-vline 
WA_DB4_SQ1000_STR-QQOTHT sy-vline 
WA_DB4_SQ1000_STR-QQLTU sy-vline 
WA_DB4_SQ1000_STR-QQMETU sy-vline 
WA_DB4_SQ1000_STR-QQAPRT sy-vline 
WA_DB4_SQ1000_STR-QQFULO sy-vline 
WA_DB4_SQ1000_STR-QQPSUO sy-vline 
WA_DB4_SQ1000_STR-QQTOTR sy-vline 
WA_DB4_SQ1000_STR-QQRROW sy-vline 
WA_DB4_SQ1000_STR-QQSTF sy-vline 
WA_DB4_SQ1000_STR-QQSTOP sy-vline 
WA_DB4_SQ1000_STR-QQODPI sy-vline 
WA_DB4_SQ1000_STR-QQHVI sy-vline 
WA_DB4_SQ1000_STR-QQAPR sy-vline 
WA_DB4_SQ1000_STR-QQDACV sy-vline 
WA_DB4_SQ1000_STR-QQCTS sy-vline 
WA_DB4_SQ1000_STR-QQCIU sy-vline 
WA_DB4_SQ1000_STR-QQCIC sy-vline 
WA_DB4_SQ1000_STR-QQCSO sy-vline 
WA_DB4_SQ1000_STR-QQCTF sy-vline 
WA_DB4_SQ1000_STR-QQCIA sy-vline 
WA_DB4_SQ1000_STR-QQCAPR sy-vline 
WA_DB4_SQ1000_STR-QQARSS sy-vline 
WA_DB4_SQ1000_STR-QQC11 sy-vline 
WA_DB4_SQ1000_STR-QQC12 sy-vline 
WA_DB4_SQ1000_STR-QQC21 sy-vline 
WA_DB4_SQ1000_STR-QQC22 sy-vline 
WA_DB4_SQ1000_STR-QQI1 sy-vline 
WA_DB4_SQ1000_STR-QQI2 sy-vline 
WA_DB4_SQ1000_STR-QQC301 sy-vline 
WA_DB4_SQ1000_STR-QQC302 sy-vline 
WA_DB4_SQ1000_STR-QQ1000 sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.